The war party met to discuss their intentions.

Daughters of Sel'rue dedicated themselves to the creature's destruction, and mitigated the risk to the city by determining the battle take place in the ruins of El'Varad, the ancient outpost taken up by the former first house in the first days of the city, while the massive caverns that would be Menzoberranzan were still being cleared.

The entrances and exits leave little chance for survival if the dragon traps them inside.  There is only one way in and out.

Haerinvureem